1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/base/tests/chrome/transformed_scrolling_repaints_3_window.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,84 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test that scaled elements with scrolled contents don't repaint unnecessarily when we scroll inside them</title>
1.8 + <script type="text/javascript" src="chrome://mochikit/content/tests/SimpleTest/paint_listener.js"></script>
1.9 +</head>
1.10 +<!-- Need a timeout here to allow paint unsuppression before we start the test -->
1.11 +<body onload="setTimeout(startTest,0)" style="background:white;">
1.12 +<iframe id="t" style="-moz-transform: scale(0.48979); -moz-transform-origin:top left; width:500px; height:300px;"
1.13 + src="data:text/html,
1.14 +<body style='background:yellow;'>
1.15 +<p>My graduate adviser was the most patient, understanding, and helpful
1.16 +person I've ever had the joy of dealing with. That doesn't change that
1.17 +there are some real dicks out there, and some of them happen to be
1.18 +scientists.
1.19 +<p id='e'>My graduate adviser was the most patient, understanding, and helpful
1.20 +person I've ever had the joy of dealing with. That doesn't change that
1.21 +there are some real dicks out there, and some of them happen to be
1.22 +scientists.
1.23 +<p>My graduate adviser was the most patient, understanding, and helpful
1.24 +person I've ever had the joy of dealing with. That doesn't change that
1.25 +there are some real dicks out there, and some of them happen to be
1.26 +scientists.
1.27 +<p>My graduate adviser was the most patient, understanding, and helpful
1.28 +person I've ever had the joy of dealing with. That doesn't change that
1.29 +there are some real dicks out there, and some of them happen to be
1.30 +scientists.
1.31 +<p>My graduate adviser was the most patient, understanding, and helpful
1.32 +person I've ever had the joy of dealing with. That doesn't change that
1.33 +there are some real dicks out there, and some of them happen to be
1.34 +scientists.
1.35 +<p>My graduate adviser was the most patient, understanding, and helpful
1.36 +person I've ever had the joy of dealing with. That doesn't change that
1.37 +there are some real dicks out there, and some of them happen to be
1.38 +scientists.
1.39 +</body>"></iframe>
1.40 +<pre id="test">
1.41 +<script type="application/javascript">
1.42 +var SimpleTest = window.opener.wrappedJSObject.SimpleTest;
1.43 +var SpecialPowers = window.opener.wrappedJSObject.SpecialPowers;
1.44 +var is = window.opener.wrappedJSObject.is;
1.45 +
1.46 +var smoothScrollPref = "general.smoothScroll";
1.47 +SpecialPowers.setBoolPref(smoothScrollPref, false);
1.48 +
1.49 +function startTest() {
1.50 + var t = document.getElementById("t");
1.51 + var e = t.contentDocument.getElementById("e");
1.52 + t.contentWindow.scrollTo(0,0);
1.53 + var utils = window.QueryInterface(Components.interfaces.nsIInterfaceRequestor).
1.54 + getInterface(Components.interfaces.nsIDOMWindowUtils);
1.55 + var iterations = 0;
1.56 +
1.57 + function nextIteration() {
1.58 + var painted = utils.checkAndClearPaintedState(e);
1.59 + is(painted, false, "Fully-visible scrolled element should not have been painted");
1.60 + if (++iterations == 10) {
1.61 + SpecialPowers.clearUserPref(smoothScrollPref);
1.62 + SimpleTest.finish();
1.63 + window.close();
1.64 + } else {
1.65 + t.contentWindow.scrollByLines(1);
1.66 + waitForAllPaintsFlushed(nextIteration);
1.67 + }
1.68 + }
1.69 +
1.70 + // Do a couple of scrolls to ensure we've triggered activity heuristics.
1.71 + waitForAllPaintsFlushed(function () {
1.72 + t.contentWindow.scrollByLines(1);
1.73 + waitForAllPaintsFlushed(function () {
1.74 + t.contentWindow.scrollByLines(1);
1.75 + waitForAllPaintsFlushed(function () {
1.76 + // Clear paint state now and scroll again.
1.77 + utils.checkAndClearPaintedState(e);
1.78 + t.contentWindow.scrollByLines(1);
1.79 + waitForAllPaintsFlushed(nextIteration);
1.80 + });
1.81 + });
1.82 + });
1.83 +}
1.84 +</script>
1.85 +</pre>
1.86 +</body>
1.87 +</html>
